Sleeping on a bad mattress can really affect your health and cause body aches as well.
If your mattress is bad and uncomfortable then you may not get as much rest as the mattress is not letting you get comfortable which causes you to toss and turn or just keeps you awake.
The bad mattress can also cause back pain, neck pain, shoulder pain etc.
If your mattress is 10 years old or older then it's likely time to replace your mattress as they do eventually wear out and when you get a new more comfortable mattress you will wake up with less or no pain and get more sleep.
If you're suffering from back or neck pain or are still feeling drowsy after sleeping all night then the mattress may be keeping you awake.
Then it's time to replace the mattress.